Home / 387,213.21-534,347.28-215,131.95

Finding the Fourth Proportional to 387,213.21, 534,347.28 and 215,131.95

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Solution

The fourth proportional to 387,213.21, 534,347.28 and 215,131.95 is: 296,878.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,213.21 : 534,347.28 = 215,131.95 : x
  2. Step 2: Convert to fraction form
    387,213.21/534,347.28 = 215,131.95/x
  3. Step 3: Cross multiply
    387,213.21x = 534,347.28 × 215,131.95
  4. Step 4: Simplify right side
    387,213.21x = 114,955,172,323.60
  5. Step 5: Solve for x
    x = 114,955,172,323.60/387,213.21
  6. Step 6: Final answer
    x = 296,878.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.